Centrifugal cream-separator.



C. H. HAGKBTT GL T. W. MORGAN. CENTRIFUGAL CREAM BBPABATOR. APPLICATION FILED Amuse, 19,10.

1,01 1,192. Patent-,Bd Dec. 12, 1911 UNITED STATES PATENT OFFICE.

CHARLES. H. HACKE'IT AND THOMAS 1V. MORGAN, 0F TATERLOQ IOWA, ASSIGNORS T0 'WILBU'R W. MARSH,

OF WATERLOO, IOWA.

CENTRIFUGAL CREAM-SEPARATOR.

:,ol hier.

Spectcatlon of Letters Patent.

Patented Dec. 12, 191 l.

Application filed August 26. 1910. Serial No. 579.029.

1b n?? a:7mm it may; concern.

le it known that we, CnluJ-:s ll. [Limiic'r'r :nid THOMAS, ll". Moneum, citizens of the linitf-fl Sintes of America, and residents ol Waterloo. ldavlchnuk county, lowa, have invented fortuin new and useful Improvements in Centrifugal Oremn.Flepurn.to1s, of which the following is u specification.

Our invention relates to improvements in centrifugal cream separators, und the objeel of our inl'irovement is to prevent an indraft or seepage of either milk or cream particles between u 'receiving-prin und the milk or crean: exit of a, sep-.irahir-bowl, 1hrouggh the annular spero between seid pan :ind bowl, by reason of' a suction caused upon seid annular spnce by reason of the downwuidl.vdirected air-currents generated by' the rapidly-rotating bowl. This object we here effected by the means which areI hercilmflcr described und eleinied, and which are illustrated in the accompanying drawings, in which:

Figure l :rb/roken sido elevation ol a creen: separator bowl, with the milk and ereuiu receiving-puns supported conrentri* cally about its head` seid peus and their supi'iorts being shown in verticaal transverse .ser-tion. lr'ig. 2 is n vertical central axial section of the. dellcciingriug used by us to 1 elle the purpose above set forth.

Similar characters of reference designate corresponding parts; throughout the several viens.

The rotary cream separator bowl a has a conical truncated part Z und e. cylindrical head L of less diameter. Suid head b has milk-exits k and. cream-exits d, for separately discharging the separated milk or cream into the conecntricnlly located pans L'. and g about said bowl. Both pans'me Aof annular shape, with their inner edges in each case spaced apart a proper distance from the bowl-head I) to provide sauce for the oscillation of said bowl therein when being rotated rapidly. posed on the pan h, the bottom of the former serving :is a. cover for the latter, while the upper pan g is provided with a removable centrally oritlccd cover e, a full-milk conduit f lying therenbove and adapted to discharge. its contents into the bowl a. The lowermost pun L is supported on a body 'When the bowl a is placed in rapid r0- tatiof. as in use, its friction with the sur The pan g is superl roundin air layer induces movement in the l latter, t e air lending to follow lhe hnwls rotation horizontally about the widest diameter of the bowl. 0n account of the gradual lessening of the diameter of the vconical part l of the head to the part Z1 of least diameter, the cir movement is greatest. about the part a, less about the part l and least about the head b in circumferential rotalion. The. net result is to cause the air to flow in obliquely and downwardly directed currents toward the space about the part a. `'This creates a suction upon the annular l spaces between the inner edges of the pans and g andthe bowl-head b, which has enough power to cause a seepage of a. partof the misty contents of said pans between said bowl-heed b and the inner edges of the. pans. This causes the cream in the upper pun g to seep into the lower milk-receiving pan h., while in like manner a portion of the. contents of the pan h escapes downward along thc bowl. To prevent this seepage caused by the said suction, we fit a. removable ring or thilnble m about the hond b, one of such thimbles near each of the inner edges of said puns h and g, and each thimble is fitted closely enough as to prevent leakage between itself and the head b, and ordinaril)1 rotates with the bowl, but not necessarily so. Each thimble m is provided with nn outwardlydirected flange c, which as shown is refernbly curved downward so as to overhang the adjacent inner edge of the abutting receiving-pan, but preferably not touching the latter. The space between the overhanging flange c und the inner edge of the pan is so narrow, and the passage between them so tortuous or indirect, that the suction of the air-draft below has insufficient power to draw the contents of the pan therethrough. The flange c is interposed in such a. way, that any of the finely divided or vuporized contents of the pan which may move toward it is deflected back into the pan. The net result is to keep the contents of the pans distinct and unmxed, and prevent exuda.- tion of the contents of either so as to seep over the exterior of the bowl. lt is obvious, that this principle of intercepting any seepage from the pans, will cover the use of the to receive from bowls having exits at or near their bottoms, as well as at the top,

device whether used with pans so placed as.

as to serve `the pur ose desired.

our invention, what We Having describe desire to secure by Letclaim as new, and ters Patent, is:

The combination with a centrifugal cream separator bowl having nn exit for apart of itq sparal'ed contents, of a receivin' vessel supported near said exit concentrlcally about the bowl but closely spaced away therefrom, and a removable tlnmble seated upon said bowl, one part of Said thimble being bent outwardly rected and adapt/ed to the receiving edge of said vessel so as to prevent seepage of the contents of the latter over its receiving edge due to suction generated by the air currents moving about said bowl.

Signed at Waterloo, Iowa, this 8th day of Aug. 1910.

CHARLES H. HACKETT. THOMAS W'. MORGAN.

lVitnesscs:

0. D. YOUNG, G. C. KENNEDY.

then downwardly d1'- completely overhang 

